docs: fix changelog attribution and add missing WhatsApp MIME fix entry
@Vincent Koc
perf(memory): lazy-load matrix crypto runtime graph
@Vincent Koc
fix(whatsapp): add HTML/XML/CSS to MIME map + fallback
@bobbyt74
feat(slack): add scoped prompts and mrkdwn hints
@Vincent Koc
Exec approvals: unify effective policy reporting and actions
@gumadeiras